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Showing 1 to 6 of 6 for “"refraction effects"”.
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Investigation of refraction effects for small GPS networks
… closures are examined, in order to investigate refraction effects on GPS networks. The effect on GPS baselines of a height bias in the reference point's coordinates is also investigated. A least squares adjustment program is developed and used to obtain a single consistent set of 3-D coordinates …
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Modeling Of Atmospheric Refraction Effects On Traffic Noise Propagation
Traffic noise has been shown to have negative effects on exposed persons in the communities along highways. Noise from transportation systems is considered a nuisance in the U.S. and the government agencies require a determination of noise impacts for federally funded projects. There are several …
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Installed jet noise
… at $90^\circ$ on the reflected side. But these effects gradually diminish as the observer angle decreases. The high-frequency spectra can be robustly predicted at large observer angles while deviation occurs at low observer angles due to jet refraction effects. An experimental study on installed …
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Analysis of magnetohydrodynamic (MHD) activity using electron cyclotron emission (ECE) diagnostics on Alcator C-Mod tokamak
… > 0) and q > 1 with moderate shear. When kinetic effects were added, the ideally unstable mode was finite ion Larmor radius (FLR) stabilized. However, considering that 1) electrons are collisional, 2) ions are collisionless, and 3) the thermal ion transit frequency is comparable to the ion …
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Radio Propagation Through Density Irregularities in the Auroral Ionosphere
… or turbulent ionosphere undergoes multiple effects, such as refraction, diffraction, etc., that distort the incident radio wave by inducing phase and amplitude fluctuations. These fluctuations are called<em> ionospheric</em><em> scintillation</em>. Scintillation effects can be detrimental to …
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Numerical investigation of air vehicle noise propagation effects
… various air vehicle noise propagation effects. It is divided in two parts: the far field and the near field study. Each of these studies is concentrated on the sound propagation mechanisms that are dominant for each case and uses a numerical method that is best suited for it in terms of …